Update CHANGELOG

Author: cklei-carly

CHANGELOG.md

@@ -1,3 +1,15 @@
 # Changelog
 
 All notable changes to `filament-tree` will be documented in this file.
+
+## 2.1.8 - 2025-08-06
+
+<!-- Release notes generated using configuration in .github/release.yml at 2.x -->
+### What's Changed
+
+#### Other Changes
+
+* Fix deprecated class reference in README by @sten in https://github.com/solutionforest/filament-tree/pull/71
+* NL translations by @sten in https://github.com/solutionforest/filament-tree/pull/72
+
+**Full Changelog**: https://github.com/solutionforest/filament-tree/compare/2.1.7...2.1.8